弯曲[wankyoku] curve
小弯[shouwan] lesser curvature of stomach
大弯[taiwan] greater curvature of stomach

弯入[wannyuu] curved indentation (esp. in stomach)
脊柱後弯症[sekichuukouwanshou] kyphosis
脊柱前弯症[sekichuuzenwanshou] lordosis

カバー曲[kabaakyoku] remake of another artist's song (a "cover")
サイン曲線[sainkyokusen] sinusoid
愛唱曲[aishoukyoku] favourite song
委曲[ikyoku] details
一曲[ikkyoku] tune (melody, piece of music)

迂曲[ukyoku] meander
円曲[enkyoku] roundabout way (of speaking or working)
円錐曲線[ensuikyokusen] conic curve
円舞曲[enbukyoku] waltz (composition)
演曲[enkyoku] musical program